120 ZOOPHYTES. 
species and unattached coralligenous species; and the latter, “ Plant Zoophytes,” the 
attached coralligenous species.” 
The order Zoocorattra includes the following subdivisions : 
Trise [. Zoocoratt1a Potyactinta. Comprises his families Actinina, Zoanthina, 
and Fungina, corresponding respectively to the families Actinidee, Zoanthidse, and the 
free Fungide, along with the genus Turbinalia of the Caryophyllia tribe. 
Trise Il. Zoocorattra Ocracrrnta, or species with 8 rays to the polyps. Com- 
prises his families Xenina, Tubiporina, Haleyonina, and Pennatulina, or all the Aleyo- 
naria but the Gorgonidze, which fall into his second order, 
Tripe III. Zoocoratnra Oxrreacrinra, corresponding to Hydroidea, and including 
his families Hydrina, Tubularina, and Sertularina. 
The order PuyrocoraLiia, is subdivided as follows : 
Trier IV. Puyrocoratti1a Potyacrinia. Includes the families Ocellina, and De- 
dalina; the former corresponding to the Caryophyllide and Cyathophyllide, except that 
the Turbinaliw are excluded by Ehrenberg, and some Astreeas are introduced under the 
genus Explanaria; and the latter corresponding nearly to the Astreeide and Fungide, 
except that the free Fungidi are separated, 
Trise V. Puyrocorartia Doprcacrinta. Comprises the families Madreporina and 
Milleporina, the first including the Poritide and part of the Madreporidz, and the second, 
the remainder of the Madreporidée of the system adopted. 
Tree VI. Payrocorattra Ocracrrnta, including the families Isidea and Gorgonina, 
corresponding to the Gorgonide. 
Tripe VIL. Puyrocoratira Onieacrrta, including the single genus Allopora. 
This system removes the free Fungide far from the attached species, and the same 
principle carried out should place in different families the free and attached Cyathophylla, 
Euphyllix, and others. The natural group Aleyonaria is divided, and the parts are 
widely separated. Notwithstanding these singularities arising from the undue importance 
allowed to the characters of his Orders, the system exhibits throughout the comprehensive 
acumen of its distinguished author, and was the first that rested its distinctions solely on 
the structure of the animals, or the ving zoophytes. 
Mitne Epwarps.—In the philosophical system of Milne Edwards, the Bryozoa con- 
stitute the order Polypes tuniciens ; and other Zoophytes (our Zoophyta), his Polypes 
parenchymatés, "This second order he subdivides as follows : 
1. “ Sertulariens.” Corresponding to the Hydroidea. 
2. “ Zoanthaires.’ Corresponding to the Actinaria, 
3. “ Aleyoniens.” Corresponding to the Aleyonaria. 
The Aleyonia group, which is bound together by important characters, is thus kept 
united; and the other groups are equally well defined in their limits and characteristics. 
5) 
The “ Zoanthaires” and “ Alcyoniens,” constitute together our Actinoidea, a group which 
is equivalent, as a whole, rather than its parts, to the ‘ Sertulariens” (Hydroidea). 
4 These orders are characterized by Ehrenberg as follows (op. cit., pp. 255, and 299) : 
ZoocoraLtia. Corpore aut omnino molli, aut Cephalopodum more intus lapidem generante (secernente 
nee excernente) hinc spe omnino libera et, preter formam, animalium characteres omnes perfectius 
servantia. Puyrocoraria, Corpore aut lapideam aut corneam materiam agglutinantem secernente ac 
dorso (solea) excernente ejusque ope semper adnato (Ostrearum more). 
